311123102130 has 384 divisors, whose sum is σ = 872184837888. Its totient is φ = 76835506176.

The previous prime is 311123102057. The next prime is 311123102141. The reversal of 311123102130 is 31201321113.

311123102130 is a `hidden beast` number, since 31 + 112 + 310 + 213 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 981460732 + ... + 981461048.

It is an arithmetic number, because the mean of its divisors is an integer number (2271314682).

Almost surely, 2^311123102130 is an apocalyptic number.

311123102130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 311123102130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436092418944).

311123102130 is an abundant number, since it is smaller than the sum of its proper divisors (561061735758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311123102130 is a wasteful number, since it uses less digits than its factorization.

311123102130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 311123102130 its reverse (31201321113), we get a palindrome (342324423243).

The spelling of 311123102130 in words is "three hundred eleven billion, one hundred twenty-three million, one hundred two thousand, one hundred thirty".